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OpmlStore.js

OpmlStore.js 7.0 KB
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  1. /*
    2. 

  2. 	Copyright (c) 2004-2009, The Dojo Foundation All Rights Reserved.
    3. 

  3. 	Available via Academic Free License >= 2.1 OR the modified BSD license.
    4. 

  4. 	see: http://dojotoolkit.org/license for details
    5. 

  5. */
    6. 

  6. 

  7. 

  8. if(!dojo._hasResource["dojox.data.OpmlStore"]){dojo._hasResource["dojox.data.OpmlStore"]=true;dojo.provide("dojox.data.OpmlStore");dojo.require("dojo.data.util.filter");dojo.require("dojo.data.util.simpleFetch");dojo.declare("dojox.data.OpmlStore",null,{constructor:function(_1){this._xmlData=null;this._arrayOfTopLevelItems=[];this._arrayOfAllItems=[];this._metadataNodes=null;this._loadFinished=false;this.url=_1.url;this._opmlData=_1.data;if(_1.label){this.label=_1.label;}this._loadInProgress=false;this._queuedFetches=[];this._identityMap={};this._identCount=0;this._idProp="_I";if(_1&&"urlPreventCache" in _1){this.urlPreventCache=_1.urlPreventCache?true:false;}},label:"text",url:"",urlPreventCache:false,_assertIsItem:function(_2){if(!this.isItem(_2)){throw new Error("dojo.data.OpmlStore: a function was passed an item argument that was not an item");}},_assertIsAttribute:function(_3){if(!dojo.isString(_3)){throw new Error("dojox.data.OpmlStore: a function was passed an attribute argument that was not an attribute object nor an attribute name string");}},_removeChildNodesThatAreNotElementNodes:function(_4,_5){var _6=_4.childNodes;if(_6.length===0){return;}var _7=[];var i,_8;for(i=0;i<_6.length;++i){_8=_6[i];if(_8.nodeType!=1){_7.push(_8);}}for(i=0;i<_7.length;++i){_8=_7[i];_4.removeChild(_8);}if(_5){for(i=0;i<_6.length;++i){_8=_6[i];this._removeChildNodesThatAreNotElementNodes(_8,_5);}}},_processRawXmlTree:function(_9){this._loadFinished=true;this._xmlData=_9;var _a=_9.getElementsByTagName("head");var _b=_a[0];if(_b){this._removeChildNodesThatAreNotElementNodes(_b);this._metadataNodes=_b.childNodes;}var _c=_9.getElementsByTagName("body");var _d=_c[0];if(_d){this._removeChildNodesThatAreNotElementNodes(_d,true);var _e=_c[0].childNodes;for(var i=0;i<_e.length;++i){var _f=_e[i];if(_f.tagName=="outline"){this._identityMap[this._identCount]=_f;this._identCount++;this._arrayOfTopLevelItems.push(_f);this._arrayOfAllItems.push(_f);this._checkChildNodes(_f);}}}},_checkChildNodes:function(_10){if(_10.firstChild){for(var i=0;i<_10.childNodes.length;i++){var _11=_10.childNodes[i];if(_11.tagName=="outline"){this._identityMap[this._identCount]=_11;this._identCount++;this._arrayOfAllItems.push(_11);this._checkChildNodes(_11);}}}},_getItemsArray:function(_12){if(_12&&_12.deep){return this._arrayOfAllItems;}return this._arrayOfTopLevelItems;},getValue:function(_13,_14,_15){this._assertIsItem(_13);this._assertIsAttribute(_14);if(_14=="children"){return (_13.firstChild||_15);}else{var _16=_13.getAttribute(_14);return (_16!==undefined)?_16:_15;}},getValues:function(_17,_18){this._assertIsItem(_17);this._assertIsAttribute(_18);var _19=[];if(_18=="children"){for(var i=0;i<_17.childNodes.length;++i){_19.push(_17.childNodes[i]);}}else{if(_17.getAttribute(_18)!==null){_19.push(_17.getAttribute(_18));}}return _19;},getAttributes:function(_1a){this._assertIsItem(_1a);var _1b=[];var _1c=_1a;var _1d=_1c.attributes;for(var i=0;i<_1d.length;++i){var _1e=_1d.item(i);_1b.push(_1e.nodeName);}if(_1c.childNodes.length>0){_1b.push("children");}return _1b;},hasAttribute:function(_1f,_20){return (this.getValues(_1f,_20).length>0);},containsValue:function(_21,_22,_23){var _24=undefined;if(typeof _23==="string"){_24=dojo.data.util.filter.patternToRegExp(_23,false);}return this._containsValue(_21,_22,_23,_24);},_containsValue:function(_25,_26,_27,_28){var _29=this.getValues(_25,_26);for(var i=0;i<_29.length;++i){var _2a=_29[i];if(typeof _2a==="string"&&_28){return (_2a.match(_28)!==null);}else{if(_27===_2a){return true;}}}return false;},isItem:function(_2b){return (_2b&&_2b.nodeType==1&&_2b.tagName=="outline"&&_2b.ownerDocument===this._xmlData);},isItemLoaded:function(_2c){return this.isItem(_2c);},loadItem:function(_2d){},getLabel:function(_2e){if(this.isItem(_2e)){return this.getValue(_2e,this.label);}return undefined;},getLabelAttributes:function(_2f){return [this.label];},_fetchItems:function(_30,_31,_32){var _33=this;var _34=function(_35,_36){var _37=null;if(_35.query){_37=[];var _38=_35.queryOptions?_35.queryOptions.ignoreCase:false;var _39={};for(var key in _35.query){var _3a=_35.query[key];if(typeof _3a==="string"){_39[key]=dojo.data.util.filter.patternToRegExp(_3a,_38);}}for(var i=0;i<_36.length;++i){var _3b=true;var _3c=_36[i];for(var key in _35.query){var _3a=_35.query[key];if(!_33._containsValue(_3c,key,_3a,_39[key])){_3b=false;}}if(_3b){_37.push(_3c);}}}else{if(_36.length>0){_37=_36.slice(0,_36.length);}}_31(_37,_35);};if(this._loadFinished){_34(_30,this._getItemsArray(_30.queryOptions));}else{if(this._loadInProgress){this._queuedFetches.push({args:_30,filter:_34});}else{if(this.url!==""){this._loadInProgress=true;var _3d={url:_33.url,handleAs:"xml",preventCache:_33.urlPreventCache};var _3e=dojo.xhrGet(_3d);_3e.addCallback(function(_3f){_33._processRawXmlTree(_3f);_34(_30,_33._getItemsArray(_30.queryOptions));_33._handleQueuedFetches();});_3e.addErrback(function(_40){throw _40;});}else{if(this._opmlData){this._processRawXmlTree(this._opmlData);this._opmlData=null;_34(_30,this._getItemsArray(_30.queryOptions));}else{throw new Error("dojox.data.OpmlStore: No OPML source data was provided as either URL or XML data input.");}}}}},getFeatures:function(){var _41={"dojo.data.api.Read":true,"dojo.data.api.Identity":true};return _41;},getIdentity:function(_42){if(this.isItem(_42)){for(var i in this._identityMap){if(this._identityMap[i]===_42){return i;}}}return null;},fetchItemByIdentity:function(_43){if(!this._loadFinished){var _44=this;if(this.url!==""){if(this._loadInProgress){this._queuedFetches.push({args:_43});}else{this._loadInProgress=true;var _45={url:_44.url,handleAs:"xml"};var _46=dojo.xhrGet(_45);_46.addCallback(function(_47){var _48=_43.scope?_43.scope:dojo.global;try{_44._processRawXmlTree(_47);var _49=_44._identityMap[_43.identity];if(!_44.isItem(_49)){_49=null;}if(_43.onItem){_43.onItem.call(_48,_49);}_44._handleQueuedFetches();}catch(error){if(_43.onError){_43.onError.call(_48,error);}}});_46.addErrback(function(_4a){this._loadInProgress=false;if(_43.onError){var _4b=_43.scope?_43.scope:dojo.global;_43.onError.call(_4b,_4a);}});}}else{if(this._opmlData){this._processRawXmlTree(this._opmlData);this._opmlData=null;var _4c=this._identityMap[_43.identity];if(!_44.isItem(_4c)){_4c=null;}if(_43.onItem){var _4d=_43.scope?_43.scope:dojo.global;_43.onItem.call(_4d,_4c);}}}}else{var _4c=this._identityMap[_43.identity];if(!this.isItem(_4c)){_4c=null;}if(_43.onItem){var _4d=_43.scope?_43.scope:dojo.global;_43.onItem.call(_4d,_4c);}}},getIdentityAttributes:function(_4e){return null;},_handleQueuedFetches:function(){if(this._queuedFetches.length>0){for(var i=0;i<this._queuedFetches.length;i++){var _4f=this._queuedFetches[i];var _50=_4f.args;var _51=_4f.filter;if(_51){_51(_50,this._getItemsArray(_50.queryOptions));}else{this.fetchItemByIdentity(_50);}}this._queuedFetches=[];}},close:function(_52){}});dojo.extend(dojox.data.OpmlStore,dojo.data.util.simpleFetch);}
    9.